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Welcome to the Piracy and Copy Protection MCQs Page

Dive deep into the fascinating world of Piracy and Copy Protection with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Piracy and Copy Protection, a crucial aspect of Reverse Engineering. In this section, you will encounter a diverse range of MCQs that cover various aspects of Piracy and Copy Protection, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Reverse Engineering.

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Piracy and Copy Protection MCQs | Page 6 of 13

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Q51.
How do pirates typically crack the challenge response protection scheme?

a.

By creating a keygen program that emulates the server’s challenge mechanism and generates a valid response on demand

b.

By duplicating the distribution floppies that have special "bad" sectors

c.

By sharing valid serial numbers online

d.

By bypassing the installation program and running the executable directly

Discuss
Answer: (a).By creating a keygen program that emulates the server’s challenge mechanism and generates a valid response on demand Explanation:The common cracking approach for the challenge response protection scheme is to create a keygen program that emulates the server’s challenge mechanism and generates a valid response on demand.
Q52.
What is a dongle?

a.

A type of computer virus

b.

A hardware-based protection scheme

c.

A type of software used for encryption

d.

A tool used for cracking software

Discuss
Answer: (b).A hardware-based protection scheme Explanation:A dongle is a non-software based component that assists in authenticating running software and is a hardware-based protection scheme.
Q53.
What is the purpose of a dongle-based protection?

a.

To authenticate specific users or computers in computer networks

b.

To ensure that the software product cannot be used on a given system without the software vendor’s approval

c.

To add a tamper-proof, non-software-based component into the mix that assists in authenticating the running software

d.

To register a user with the software vendor

Discuss
Answer: (c).To add a tamper-proof, non-software-based component into the mix that assists in authenticating the running software Explanation:The purpose of a dongle-based protection is to add a tamper-proof, non-software-based component into the mix that assists in authenticating the running software.
Q54.
How does a trivial implementation of a dongle-based protection work?

a.

The protected program checks that the dongle is installed and keeps running if it is present.

b.

The protected program checks that the dongle is installed and exits if it is not present.

c.

The protected program checks that the dongle is installed and runs regardless of whether it is present or not.

d.

The protected program does not check whether the dongle is installed.

Discuss
Answer: (b).The protected program checks that the dongle is installed and exits if it is not present. Explanation:In a trivial implementation of a dongle-based protection, the protected program checks that the dongle is installed, and if it is not, the program notifies the user that the dongle isn’t available and exits.
Q55.
What is the solution employed by dongle developers to make their protection scheme more secure?

a.

Design the dongle to simply check whether it is present or not.

b.

Design the dongle to contain something that the program needs in order to run.

c.

Design the dongle to encrypt the program binaries.

d.

Design the dongle to register the user with the software vendor.

Discuss
Answer: (b).Design the dongle to contain something that the program needs in order to run. Explanation:The solution employed by dongle developers is to design the dongle so that it contains something that the program needs in order to run, which typically boils down to encryption.
Q56.
How does a dongle-based protection scheme work?

a.

The protected program checks that the dongle is installed by calling into a device driver.

b.

The dongle contains something that the program needs to run, such as an encryption key.

c.

The program is divided into numerous small chunks that are each encrypted using a different key.

d.

The dongle encrypts the program binaries and stores the decryption key safely inside the dongle.

Discuss
Answer: (b).The dongle contains something that the program needs to run, such as an encryption key. Explanation:In a dongle-based protection scheme, the dongle contains something that the program needs to run, such as an encryption key. The decryption key is not available anywhere on the installation CD—it is stored safely inside the dongle.
Q57.
How does an emulator program work?

a.

It emulates the behavior of the real dongle’s device driver and fools the protected program into thinking it is communicating with the real dongle.

b.

It divides the program into numerous small chunks that are each encrypted using a different key.

c.

It checks that the dongle is installed by calling into a device driver.

d.

It decrypts the actual program code using the decryption key stored in the dongle.

Discuss
Answer: (a).It emulates the behavior of the real dongle’s device driver and fools the protected program into thinking it is communicating with the real dongle. Explanation:An emulator program is a device driver that is designed to mimic the behavior of the real dongle’s device driver and fool the protected program into thinking it is communicating with the real dongle when in fact it is communicating with an emulator.
Q58.
How can an emulator program be used to crack a dongle-based protection scheme?

a.

By tracing the traffic between the program and the dongle during runtime to obtain all the necessary keys to the program.

b.

By dividing the program into numerous small chunks that are each encrypted using a different key.

c.

By ripping the decrypted version of the code from memory after the program starts and creating a new program executable that contains the decrypted binary code.

d.

By checking that the dongle is installed by calling into a device driver.

Discuss
Answer: (a).By tracing the traffic between the program and the dongle during runtime to obtain all the necessary keys to the program. Explanation:An emulator program can be used to crack a dongle-based protection scheme by tracing the traffic between the program and the dongle during runtime to obtain all the necessary keys to the program. The emulator program can then emulate the dongle and provide all the necessary keys to the program while it is running.
Q59.
What is the purpose of hardware-based protection schemes?

a.

To authenticate running software

b.

To provide a serial number for software

c.

To improve computer performance

d.

To install software on multiple computers

Discuss
Answer: (a).To authenticate running software Explanation:Hardware-based protection schemes are designed to add a tamper-proof, non-software-based component into the mix that assists in authenticating the running software.
Q60.
Why is the most trivial implementation of a dongle-based protection scheme vulnerable?

a.

It is easy to attack because all a cracker must do is remove or ignore the check and have the program continue to run

b.

It requires an emulator program to run

c.

It divides the program into numerous small chunks

d.

It contains something that the program needs in order to run

Discuss
Answer: (a).It is easy to attack because all a cracker must do is remove or ignore the check and have the program continue to run Explanation:The most trivial implementation of a dongle-based protection is to simply have the protected program call into a device driver that checks that the dongle is installed. If it is, the program keeps running. If it isn't, the program notifies the user that the dongle isn't available and exits. This approach is very easy to attack because all a cracker must do is simply remove or ignore the check and have the program continue to run regardless of whether the dongle is present or not.
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